Protecting device for incandescent gas-lamps.



H. LYON.

PROTECTING DEVICE FOR INCANDESCENT LAMPS.

APPLICATION FILVED JULY 23. 1914.-

1 I '1 mvm'ron W QMJ w H. LYON. PHOTECTINGDEWCE FOR INCANDESCENT LAMPS.

APPLICATION FILED JULY 23. 914.

Patented Jan. 1, i918;

2 SHEETo-3HEET 2 STATES PATENT v HowAnnLYoN; OEGLOUGESTER -CITY, NEW JERSEY. ASSIGNOR TO WELSBACl-IiLIGHT; COMPANY; 0E GLOUCESTER; NEW JE sEY; A coEPoRATIoNoE NEWJJEBKSEYL PROTECTING -DEVICE.FOR INCANDESGENT. GrAS-LAlViPS.

Applicationfiledfl'uly 23, 1914; Serial No. 852,619;

To aZZ whom it mayconcern:

Be itknown that" I, HOWARD LYON, a citizen of the United States, residing'at Gloucester City, Camden county, New'Jersey, have invented a new" and useful Improvement inProtecting Devices for: Incandescent Gas-Lamps, of which the following is a full, clear, and'exact description, reference being had to the accompanying drawings, forming part. of this specification, in which:

Figure 1 is a side. view" partly broken away, showing my invention applied to" one form of lamp.

Fig. 2 is a perspective view of the upper canopy or protector.

Fig. 3 is a plan view of the lower canopy or protector.

' Fig. i is a-sectional elevation showing the lower canopy or protector, applied to another form of lamp, and

Fig. 5 is a plan view of the canopy or protector of Fig. a.

My invention has relation to safety or protecting means for the glassware and fixtures of incandescent gas lamps of the inverted; type; and is designed to provide means of simple and efficient character. for preventing the heat from the lamp burners from discoloring the fixture, as well as for breaking up the heat column in such a way as to largely dissipate the heat before it strikes the ceiling. Also to provide a protector or canopy which can be placed di rectly below the mantles for the purpose, of preventing injury to the glassware of'the lamp.

\Vhile my invention isparticularly adapted to the horizontal type of burner for use in indirect and semi-indirect lighting systerns described and claimed'in my copending application, Serial No. 852,618, filed July 23, 191%, it may be, in all or in part, applied to various other forms of lamps.

Referring first to that form of my invention which is shown in Figs. 1 to 3 inclusive, the numeral 2 designates the manifold of a suspended lamp such as is employed in inclirect systems of lighting. This manifold has a plurality of depending burners 3, having the incandescent mantles. indicated at 4.. 5 designates the bowl orglassware of the lamp, which is supported in any suitable way. within the supporting ring 6 and which Specification of Letters Patent.

Patented-Jan. 1 .1918.

ringis shownas suspended by the members 7'." One'0'f3 these membersmay be made hollow*to"serve' as thegassupplypipe which communicates with the mixing tubeS leading to the manifold 2.

9 designates an upper canopy or protector which is placed over the manifold in the manner shown in such a way as to form adeflector, preventing the heated products of combustion from the burnersfrom coming in contact. with thesupportingmembers 7 and thus discoloring-them. It also acts to deflect and dissipate the heat. This canopy or protector-may be of any suitable character. It is preferably, however, formed of transparent or semi-transparent or translucent material, such as mica, held in a suitable frame 10 having the supporting arlall whiclrmay be secured to a collar 12 on the mixer-pipe or tube 8 leading to the manifold. This canopy or protector is preferably of arched form, as shown.

13des gnates the lower canopy-or protector which is placed below the mantles-and between them and the bowl 5. also beconvenientlysupported by an arm 14 from-the collar- 12. It is shown as being of inverted cone formyand in this particular instance composed of'a plurality of assembled pieces 15 ofmica securedtogether by pinsor eyelets 16.

' The main purposeof'this canopy is to prevent the flame,- in case of a broken mantle, from coming in contact with the bowl. Its use also tends to lower the; temperature of the glass bowl and thereby greatly reduces the breakage. It also facilitates the more prompt and free ignition of the burner from the usual pilot l ght, (not shown) since it'tends to confine the gas'delivered by the pilot light tube in the imme diate vicinity of the mantles. In case a portion of one of the mantles should drop. this canopy catches it and prevents its falling onto the glassware.

Instead of mica, I may use any other suitable material such as fused pure quartz; and in some cases the lower canopy may be made of non-translucent material.

The canopies may be supported in various ways; and; the upper canopy can. be so shaped as to direct the heat products in any desired direction. Various other changes can be made in the details of construction This may and arrangement of the parts without departing from the spirit and scope of my invention.

Thus, in Figs. at and 5 I have shown the lower canopy applied to another form of incandescent gas lamp supported from below. In this construction, the canopy shown at 17 is supported below the mantles 18 by a metal collar 19 mounted on the Bunsen tube 20. This collar is shown as having the lugs 21 which engage the body of the canopy; and in Fig. 5 one of these lugs is shown extended, as at 21 directly underneath the seam of the canopy, to the upper, outer edge thereof. The purpose of the canopy in this application is the same as in that first described, namely, to protect the glassware 22.

I/Vhat I claim is:

1. An inverted incandescent cluster lamp having glassware extending below its mantles, a protecting device or canopy arranged between the lower ends of the mantles and the glassware independently of the glassware and having transverse dimensions greater than the mantle cluster, the upper edge of the protecting device being below the body portions of the mantles, said pr0- tecting device being of heat-insulating material and arranged to protect the glassware below said protector from the heat of the mantle, said protector being without any substantial openings therein; substantially as described.

2. In an inverted incandescent cluster gas lamp having glassware extending below its mantles a protecting device ortranslucent canopy of dished form arranged between the lower ends of the mantles and the glassware independently of the glassware and having transverse dimensions greater than the mantle cluster, said protector being of heat-insulating material and protecting the lower part of the glassware from the heat of the mantles, the upper edge of the protector being below the upper parts of the mantles; substantially as described.

3. An inverted incandescent cluster gas lamp, arranged for indirect or semi-indirect lighting having depending separated suspension members, and a canopy or deflector of arch form arranged above the burners, two of the longitudinal edges of the de fleet-or being approximately straight, while the other two edges are of curved form, the deflector being so positioned that the heat currents are directed outwardly over one of the curved edges between the depending suspension members; substantially as described.

4. An inverted incandescent cluster gas lamp, arranged for indirect or semi-indirect lighting having depending separated suspension members, and a canopy or deflector of arch form arranged above the burners but within the globe or deflector holder, two of the longitudinal edges of the defieCtOr being approximately straight, while the other two edges are of curved form, the deflector being so positioned that the heat currents are directed outwardly over one ofthe curved edges between the depending suspension members; substantially as described.

5. An inverted incandescent cluster gas lamp, arranged for indirect or semi-indirect lighting having depending separated suspension members, and a canopy or deflector of arch arranged above the burners, two of the longitudinal edges of the deflector being approximately straight, while the other two edges are of curved form, the deflector being so positioned that the heat currents are directed outwardly over one of the curved edges between the depending suspension members; and a protecting canopy arranged below the mantles and supported independently of the glassware, said canopy being arranged to protect the globe from the heat of the mantles; substantially as described.

In testimony whereof, I have hereunto set my hand.

HOWARD LYON.

Witnesses J. H. JOHNSON, EDGAR KnNToN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

